Google Calendar displaying RTL/Hebrew

I have created a public Google Calendar of wine events in Israel (bag.gy/yossiswineevents). I created and maintain the calendar in Firefox and Chrome (just installed Opera today).

When I open the calendar in Opera, the interface is Hebrew and text is right aligned. This is not the case in Firefox and Chrome which show everything properly.

I'm guessing that Opera is inheriting some Windows settings and assuming that I want Hebrew/RTL since I'm in Israel, but I really don't. Under Opera settings, the user interface language and the preferred language for webpages is English.